When I bought my heap one nagging problem that I eventually had to conquer was a short which kept blowing the Radio fuse, I tried a couple of time initally replacing the fuse but it blew seconds after turning on the key. After exposing the wiring under the dash (dash and all heater and air conditioner components removed to refurbish them) I proceeded to systematically track down the short. The service manual (two thick books) wiring diagram for the radio fuse showed a splice (A13) where all the wires from the components serviced by the fuse (located about where the steering wheel is in harness wiring), I located the splice without too much trouble and found that using the continuity mode of my voltmeter one wire was continuous with the ground. Tracking it across the front of the dash it ended in a connector to the vanity mirror light circuit behind the right visor, I removed the trim from the front of the right hand door and traced the wire to the visor, removed the visor (3 phillips screws) and EUREKA the short was caused by the edge of the visor mount pressing the wires into the metal grounding them out. I think this short had been there a long time because the former owner was "unable" to install a new radio due to the short. I repaired the wiring, replaced everything after testing and respliced "A13" and rewrapped the harness with electrical tape. I hope this helps someone who may be having a short problem, Using the service manual wiring diagrams and following the flow of the electrons even I a mier novice was able to conquer this nutdriver problem, Now, what radio would you recommend I put in?